uhhh... they're in focus... and the exposure seems fine.
I'm always confused about how to comment on photos of... well, I supose, someone else's work. I think what's tough for me is that you've placed them in the portrait section. From a different standpoint, say... commercial/advertising, I say these were all successful photos, especially the first image. All white "products" can be a challenge and you handled it well.
I want to rotate the second one to make the lines of the window frame plumb. And on the third, I see no reason to keep the pole in the image. A simple task to clone it out, or just crop.
I hope this is helpful.
Pete